This isn't exactly what you are asking for -- but I have an idea...
How about a troubleshooting wizard that helps admins turn on the right diagnostic logging services/categories. For example, I had a customer yesterday who called in with a problem getting messages to deliver to distribution lists. He knew to look in the Event Viewer for errors -- but since he didn't know which Exchange Diagnostic Logging components to push to Maximum, he wasn't getting useful data. I envision a wizard that asks questions like:
"Are you having problems delivering messages to local mailboxes? Remote mailboxes in other Routing Groups? Internet users?" (and lots of other questions)
...and then, based on the answers given by admins, the wizard recommends the correct Diagnostic Logging Services/Categories to increase to Maximum.
Just my 2 cents. Have an excellent Friday! - Jeff